Activate farmbot in baystation12.dme

Still has that runtime kijigger though

runtime error: Cannot read null.len
proc name: move to target (/obj/machinery/bot/farmbot/proc/move_to_target)
  source file: farmbot.dm,363
  usr: null
  src: Farmbot (/obj/machinery/bot/farmbot)
  call stack:
Farmbot (/obj/machinery/bot/farmbot): move to target()
Farmbot (/obj/machinery/bot/farmbot): process()
/datum/controller/game_control... (/datum/controller/game_controller): process machines()
/datum/controller/game_control... (/datum/controller/game_controller): process()

Something about these lines?
			src.path = AStar(src.loc, dest, /turf/proc/CardinalTurfsWithAccess, /turf/proc/Distance, 0, 30,id=botcard)
			if(src.path.len == 0)